Expansion tube having expansion slits and apparatus for manufacturing heat shrinkable tube having the expansion tube
US7207792B2 · kind B2 · utility
0Cited by
9References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 24, 2004 |
| Grant date | Apr 24, 2007 |
| Priority date | — |
| Expiry date | Apr 4, 2025 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C55/22
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The present invention relates to an expansion tube that has a plurality of expansion slits on the outer peripheral surface thereof long a longitudinal direction, each of the expansion slits having a predetermined width and a relatively larger length than the predetermined width, and an apparatus for manufacturing a heat shrinkable tube, having the expansion tube, that can regularly and fast expand the heat shrinkable tube, and after the expansion, regularly and fast cool the heat shrinkable tube by the cooling water sprayed through the slits, thereby rapidly and stably manufacturing the heat shrinkable.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.